height,weight=eval(input("请输入身高（m）和体重（kg）[中间用逗号隔开]"))
bmi=weight/pow(height,2)
print("BMI{:.2f}".format(bmi))
who,dom="",""
if bmi<18.5:
    who,dom="过轻","过轻"
elif 18.5<=bmi<25:
    who,dom="正常","正常"
elif 25<=bmi<28:
    who,dom="过重","过重"
elif 28<=bmi<32:
    who,dom="肥胖","肥胖"
else:
    who,dom="严重肥胖","严重肥胖"
print("BMI指标为：国际{0},国内{1}".format(who,dom))